Examlex
Cathode rays and ___________ are both streams of electrons.
Urine Samples
Specimens of urine collected for medical testing to diagnose diseases or monitor conditions.
Control Samples
Specimens or materials used as a standard of comparison for checking the results of an experiment or test.
Positive And Negative
Terms used to describe the presence or absence of a condition or property, often used in scientific and medical testing.
Oculars
Refers to the eyepieces on optical devices, such as microscopes and telescopes, that magnify images for viewing.
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